-85.63% is the change from 320 to 46
Calculation steps:
[( 46 - 320 ) ÷ 320] x 100 = -85.63%
Formula
Percentage change = [(46 - 320) / 320] x 100
Subtract the new number by the original number
46 - 320 = -274
-274 ÷ 320 = -0.85625
-0.85625 x 100 = -85.63%